/* Layout: one-screen tablet app — sentence strip / suggestion rail / category tabs / fixed card grid. Fitzgerald Key colours carry word type. */
:root{
  --bg:#eef1f4; --surface:#ffffff; --ink:#15212b; --muted:#5b6874; --line:#cfd6dd; --accent:#1d5fa8; --accent-ink:#ffffff; --focus:#e08a00;
  --c-person:#fff1b8; --b-person:#d9b400;
  --c-verb:#d6f2d0; --b-verb:#3e9b34;
  --c-noun:#ffe0c2; --b-noun:#d9822b;
  --c-place:#e6dcf7; --b-place:#7a5bb5;
  --c-feel:#d4e8fb; --b-feel:#3b7fc4;
  --c-social:#fbd9e6; --b-social:#c2457a;
  --c-misc:#f3f4f6; --b-misc:#7d8791;
  --font-display:"Noto Sans Thai UI","Noto Sans Thai",system-ui,sans-serif;
  --font-body:"Noto Sans Thai UI","Noto Sans Thai",system-ui,sans-serif;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#11171d; --surface:#1b232b; --ink:#eef2f5; --muted:#9aa7b3; --line:#33404c; --accent:#6aa9ee; --accent-ink:#0b1622; --focus:#ffb43d;
  --c-person:#4a3f0f; --b-person:#e2c341; --c-verb:#1f3d1c; --b-verb:#7ccf70; --c-noun:#4a2f15; --b-noun:#f0a35a;
  --c-place:#33274d; --b-place:#b49be6; --c-feel:#16314d; --b-feel:#79b3ee; --c-social:#4a1f31; --b-social:#ef87b2;
  --c-misc:#262f38; --b-misc:#a3adb7; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#11171d; --surface:#1b232b; --ink:#eef2f5; --muted:#9aa7b3; --line:#33404c; --accent:#6aa9ee; --accent-ink:#0b1622; --focus:#ffb43d;
  --c-person:#4a3f0f; --b-person:#e2c341; --c-verb:#1f3d1c; --b-verb:#7ccf70; --c-noun:#4a2f15; --b-noun:#f0a35a;
  --c-place:#33274d; --b-place:#b49be6; --c-feel:#16314d; --b-feel:#79b3ee; --c-social:#4a1f31; --b-social:#ef87b2;
  --c-misc:#262f38; --b-misc:#a3adb7; color-scheme:dark}

html,body{height:100%}
body{background:var(--bg);color:var(--ink);font-family:var(--font-body);font-size:16px;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;touch-action:manipulation;overflow:hidden}
.app{height:100%;display:flex;flex-direction:column;gap:10px;padding-inline:16px;padding-block:12px;box-sizing:border-box;max-width:1280px;margin:0 auto}
button{font:inherit;color:inherit}
:focus-visible{outline:4px solid var(--focus);outline-offset:2px}

/* sentence strip */
.strip{display:flex;gap:10px;align-items:stretch}
.sentence{flex:1;min-width:0;background:var(--surface);border:3px solid var(--line);border-radius:18px;display:flex;align-items:center;gap:8px;padding:8px;overflow-x:auto;min-height:92px}
.sentence .empty{color:var(--muted);font-size:1.05rem;padding-inline:10px}
.chip{flex:none;display:flex;flex-direction:column;align-items:center;justify-content:center;width:76px;height:76px;border-radius:12px;border:2px solid var(--b);background:var(--c);font-weight:600;font-size:.95rem;line-height:1.1}
.chip .ic{font-size:1.8rem;line-height:1}
.act{flex:none;width:92px;border-radius:18px;border:3px solid transparent;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;font-weight:600;cursor:pointer;position:relative;overflow:hidden}
.act .ic{font-size:2rem;line-height:1}
.act.speak{background:var(--accent);color:var(--accent-ink);width:120px;font-family:var(--font-display);font-size:1.15rem}
.act.back,.act.clear{background:var(--surface);border-color:var(--line)}
.speak.talking{animation:pulse 1s ease-in-out infinite}
@keyframes pulse{50%{filter:brightness(1.2)}}

/* suggestion rail */
.rail{display:flex;align-items:center;gap:8px;min-height:62px}
.rail-label{flex:none;font-size:.8rem;letter-spacing:.04em;color:var(--muted);width:72px;line-height:1.2}
.rail-items{flex:1;min-width:0;display:flex;gap:8px;overflow-x:auto;padding-block:2px}
.sug{flex:none;display:flex;align-items:center;gap:8px;height:56px;padding-inline:14px;border-radius:28px;border:2px dashed var(--accent);background:var(--surface);font-weight:600;font-size:1.05rem;cursor:pointer;position:relative;overflow:hidden}
.sug .ic{font-size:1.5rem}

/* tabs */
.tabs{display:flex;gap:8px;overflow-x:auto;padding-bottom:2px}
.tab{flex:none;height:54px;padding-inline:16px;border-radius:14px;border:3px solid var(--b);background:var(--c);font-weight:600;font-size:1.05rem;display:flex;align-items:center;gap:6px;cursor:pointer;position:relative;overflow:hidden;opacity:.72}
.tab[aria-selected="true"]{opacity:1;box-shadow:0 0 0 3px var(--ink)}
.tab .ic{font-size:1.4rem}

/* grid */
.gridwrap{flex:1;min-height:0;overflow-y:auto;padding:4px}
.grid{display:grid;grid-template-columns:repeat(var(--cols,4),minmax(0,1fr));gap:14px}
.card{aspect-ratio:1/0.92;border-radius:20px;border:3px solid var(--b);background:var(--c);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;position:relative;overflow:hidden;padding:6px}
.card .ic{font-size:clamp(2.2rem,6vw,4rem);line-height:1}
.card .lb{font-weight:600;font-size:clamp(1rem,2.4vw,1.6rem);text-align:center;line-height:1.15}
.card.urgent{border-width:4px}
.card .badge{position:absolute;top:6px;right:8px;font-size:.7rem;color:var(--muted)}

/* hold-to-select progress */
.fill{position:absolute;inset:0;background:var(--ink);opacity:.14;transform-origin:left;transform:scaleX(0);pointer-events:none}
.holding .fill{transition:transform var(--hold,600ms) linear;transform:scaleX(1)}
.done{animation:pop .35s ease-out}
@keyframes pop{0%{transform:scale(.94)}100%{transform:scale(1)}}
body.cooling .card,body.cooling .sug,body.cooling .tab,body.cooling .act{filter:saturate(.6)}

.k-person{--c:var(--c-person);--b:var(--b-person)} .k-verb{--c:var(--c-verb);--b:var(--b-verb)}
.k-noun{--c:var(--c-noun);--b:var(--b-noun)} .k-place{--c:var(--c-place);--b:var(--b-place)}
.k-feel{--c:var(--c-feel);--b:var(--b-feel)} .k-social{--c:var(--c-social);--b:var(--b-social)}
.k-misc{--c:var(--c-misc);--b:var(--b-misc)}

.foot{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:.8rem;color:var(--muted)}
.lock{border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:6px 12px;cursor:pointer;position:relative;overflow:hidden}
.lock .fill{--hold:2000ms}
.lock.holding .fill{transition-duration:2000ms}

/* teacher panel */
.panel{position:fixed;inset:0;background:var(--bg);overflow-y:auto;z-index:10;user-select:text;-webkit-user-select:text}
.panel-in{max-width:760px;margin:0 auto;padding-inline:16px;padding-block:20px calc(20px + env(safe-area-inset-bottom,0px));display:flex;flex-direction:column;gap:18px}
.panel h1{font-family:var(--font-display);font-weight:500;font-size:1.6rem;margin:0;text-wrap:balance}
.panel h2{font-size:1.05rem;margin:0 0 8px}
.panel p.note{margin:0;color:var(--muted);font-size:.92rem;line-height:1.6}
.box{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px;display:flex;flex-direction:column;gap:10px}
.seg{display:flex;flex-wrap:wrap;gap:8px}
.seg label{display:flex;align-items:center;gap:6px;border:2px solid var(--line);border-radius:10px;padding:8px 12px;cursor:pointer}
.seg input{accent-color:var(--accent)}
.row{display:flex;flex-wrap:wrap;gap:10px;align-items:end}
.row > div{display:flex;flex-direction:column;gap:4px;min-width:0;flex:1 1 140px}
.row input,.row select{font:inherit;padding:10px;border-radius:10px;border:2px solid var(--line);background:var(--bg);color:var(--ink);min-width:0}
.btn{border:0;border-radius:10px;padding:11px 18px;background:var(--accent);color:var(--accent-ink);font-weight:600;cursor:pointer}
.btn.ghost{background:transparent;border:2px solid var(--line);color:var(--ink)}
.custom-list{display:flex;flex-direction:column;gap:6px}
.custom-list div{display:flex;justify-content:space-between;align-items:center;gap:8px;border-bottom:1px solid var(--line);padding-block:6px}
.voice-warn{background:var(--c-noun);border:2px solid var(--b-noun);border-radius:12px;padding:10px 14px;font-size:.95rem}
@media (max-width:640px){
  .act{width:64px}.act.speak{width:84px;font-size:1rem}.act .ic{font-size:1.5rem}
  .chip{width:60px;height:60px;font-size:.8rem}.chip .ic{font-size:1.4rem}
  .sentence{min-height:76px}.rail-label{display:none}
  .grid{gap:10px}
}
@media (prefers-reduced-motion:reduce){.holding .fill{transition:none}.done,.speak.talking{animation:none}}

/* ---------- base additions ---------- */
:root{--danger:#b3261e}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){--danger:#ff8a80}}
[hidden]{display:none!important}
.card .pic{width:72%;aspect-ratio:1;object-fit:cover;border-radius:12px;pointer-events:none;background:#fff}
.card .pic + .lb{font-size:clamp(.95rem,2.1vw,1.4rem)}
.chip .pic{width:44px;height:44px;object-fit:cover;border-radius:8px;background:#fff}
.panel h3{font-size:.95rem;margin:10px 0 4px}
.panel code{font-size:.85rem;user-select:all;-webkit-user-select:all;word-break:break-all}
.row.between{justify-content:space-between;align-items:center}
.row.end{justify-content:flex-end}
.row.tight{flex-wrap:nowrap;gap:6px}
.row > div.auto,.row > .auto{flex:0 0 auto}
.row label{font-size:.9rem;color:var(--muted)}
.btn:disabled{opacity:.5}
.btn.ghost.danger{color:var(--danger);border-color:var(--danger)}
.msg{margin:0;font-size:.92rem;min-height:1.2em}
.msg.bad{color:var(--danger);font-weight:600}
.warn{background:var(--c-noun);border:2px solid var(--b-noun);border-radius:12px;padding:10px 14px;font-size:.95rem;line-height:1.6}
.stack{display:flex;flex-direction:column;gap:12px}
input,select{font:inherit}
.panel input,.panel select,.dlg input,.dlg select{padding:10px;border-radius:10px;border:2px solid var(--line);background:var(--bg);color:var(--ink);min-width:0;width:100%;box-sizing:border-box}
.panel input[type=radio],.panel input[type=checkbox]{width:auto}
.dlg input[type=range]{padding:0;border:0;background:none}

/* teacher card list */
.custom-list{display:flex;flex-direction:column;gap:8px}
.crow{display:flex;align-items:center;gap:10px;padding:8px;border-radius:12px;border:2px solid var(--b);background:var(--c)}
.crow .grow{flex:1;min-width:0;display:flex;flex-direction:column}
.crow small{color:var(--muted)}
.thumb{width:52px;height:52px;flex:none;border-radius:10px;object-fit:cover;background:#fff;display:flex;align-items:center;justify-content:center;font-size:1.8rem}

/* dialogs */
.dlg{border:0;border-radius:18px;padding:20px;background:var(--surface);color:var(--ink);width:min(920px,calc(100vw - 32px));max-height:calc(100dvh - 32px);box-sizing:border-box;user-select:text;-webkit-user-select:text}
.dlg.small{width:min(380px,calc(100vw - 32px))}
.dlg::backdrop{background:rgba(0,0,0,.55)}
.dlg h2{margin:0;font-size:1.25rem}
.dlg .note{margin:0;color:var(--muted);font-size:.9rem}
#pin1,#pin2{font-size:1.6rem;letter-spacing:.4em;text-align:center}

/* card designer */
.editor{display:flex;flex-direction:column;gap:14px}
.ed-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px}
.ed-pic,.ed-fields{display:flex;flex-direction:column;gap:10px;min-width:0}
.ed-fields > div:not(.row){display:flex;flex-direction:column;gap:4px}
.ed-fields .row{align-items:end;flex-wrap:nowrap}
.ed-fields label{font-size:.9rem;color:var(--muted)}
.cropbox{position:relative;width:100%;aspect-ratio:1;border-radius:16px;overflow:hidden;background:repeating-conic-gradient(var(--line) 0 25%,transparent 0 50%) 0 0/24px 24px;touch-action:none}
.cropbox canvas{width:100%;height:100%;display:block;cursor:grab;position:relative;z-index:1}
.crop-empty{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;text-align:center;color:var(--muted);margin:0;z-index:0;background:var(--bg)}
#edZoomRow{align-items:center;flex-wrap:nowrap}
#edZoomRow input{flex:1}
.prev-wrap{align-items:flex-start}
.card.preview{width:180px;cursor:default}
.camera{position:fixed;inset:0;background:#000;z-index:20;display:flex;flex-direction:column}
.camera video{flex:1;min-height:0;width:100%;object-fit:contain}
.cam-bar{display:flex;justify-content:space-between;align-items:center;padding:16px;gap:12px}
.cam-bar .btn.ghost{color:#fff;border-color:#888}
.shutter{width:76px;height:76px;border-radius:50%;border:6px solid #fff;background:#e33;cursor:pointer}
@media (max-width:700px){.ed-grid{grid-template-columns:1fr}}

.foot-info{background:none;border:0;margin:0;padding:8px 8px 8px 0;color:inherit;font:inherit;text-align:left;cursor:default;touch-action:none;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;-webkit-tap-highlight-color:transparent;position:relative;min-height:36px}